An environmentally friendly ventilation system for elevators

Abstract

This utility model discloses an environmentally friendly ventilation system for elevators, including an elevator car with a sliding elevator door on the front. A car top plate is located on the top of the car, and a ventilation mechanism is installed through the center of the top plate. Lifting mechanisms are fixedly installed through the top plate at the four corners of the ventilation mechanism. A protective box is fixedly installed on the top of each lifting mechanism, and a drive motor is fixedly installed inside the protective box. The ventilation mechanism includes a lifting platform and a fixed frame at the bottom, with replacement ports on both sides of the fixed frame. This utility model allows for filter replacement by removing the filter element through the replacement ports after the ventilation mechanism descends, increasing the convenience of filter element replacement and ensuring the cleanliness of the circulating air in the small space of the elevator shaft, reducing the impact of dust on the ventilation system inside the car.

Description

Technical Field

[0001] This utility model belongs to the field of elevator technology, specifically relating to an environmentally friendly ventilation system for elevators. Background Technology

[0002] The main functions of an elevator ventilation system include: Air quality: Ensuring fresh air inside the elevator and reducing the accumulation of odors and pollutants. Passenger comfort: Maintaining suitable temperature and humidity to enhance the passenger experience. Health protection: Preventing the spread of bacteria and viruses due to poor air circulation, protecting passenger health. Safety: In emergencies, the ventilation system helps remove smoke and harmful gases, providing a safer escape environment for passengers. Fresh air supply and circulation: Introducing fresh air through fresh air inlets and maintaining airflow using fans or air circulation devices. These functions ensure the safety and comfort of the elevator during use.

[0003] A domestic utility model patent with application number CN202420683490.9 discloses an elevator environmentally friendly ventilation system, relating to the field of elevator ventilation technology. The system includes an elevator bridge box, with a partition fixedly connected to one side of the bridge box, a filter box fixedly connected to one side of the upper end of the partition, and a fan box fixedly connected to the other side of the upper end of the partition. A first air inlet pipe is fixedly connected to the top of the filter box. This utility model adopts the above structure, with the filter cartridge located above the partition. Sealing plates fixed to the bottom of the filter cartridge are located on both sides of the partition. When filter replacement is needed, a drive assembly moves a connecting rod, causing the connecting rod to leave the connecting hole of the sealing plate. At this time, the filter cartridge is no longer fixed, and the sealing plate along with the filter cartridge can be removed from the filter box, allowing for quick replacement of the filter cartridge. This design structure provides convenience for elevator maintenance personnel to replace filter cartridges, and regular replacement can effectively prevent a decrease in elevator ventilation efficiency from affecting passengers. The aforementioned utility model has a high filter replacement position, which requires the use of ladders and other tools to carry the filter into the elevator car, making the process cumbersome. Furthermore, different sizes of ladders must be selected according to the size of the elevator car, which is quite limiting and not conducive to the filter replacement operation. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an environmentally friendly ventilation system for elevators, including an elevator car, an elevator door slidably installed on the front of the elevator car, a car top plate on the top of the elevator car, a ventilation mechanism installed through the middle of the car top plate, and lifting mechanisms fixedly installed through the car top plate at the four corners of the outer ring of the ventilation mechanism. A protective box is fixedly installed on the top of a set of lifting mechanisms, and a drive motor is fixedly installed inside the protective box. The ventilation mechanism includes a lifting platform and a fixed frame fixedly installed at the bottom, and replacement ports are opened on both sides of the fixed frame.

[0005] As a further preferred technical solution of this utility model, the lifting mechanism includes four sets of positioning frames, three sets of positioning frames are fixedly installed with guide rods, and one set of positioning frames is installed with a transmission screw. The two ends of the transmission screw are fixedly installed to the inner wall of the positioning frame through bearing seats.

[0006] All four positioning frames are installed through the car roof, facilitating the raising and lowering of the ventilation mechanism under the action of the lifting mechanism.

[0007] As a further preferred technical solution of this utility model; connecting rods are fixedly installed at the four corners of the top of the lifting platform, and auxiliary lifting blocks are fixedly installed at the top of the connecting rods. Three sets of auxiliary lifting blocks are slidably installed through the guide rod, and one set of auxiliary lifting blocks is threaded through the transmission screw. The output end of the drive motor is connected to the transmission screw through the transmission screw.

[0008] The drive motor drives the transmission screw to rotate, causing the auxiliary lifting block to move up and down under the rotation of the transmission screw. The connecting rod achieves a guiding effect, allowing the lifting platform to rise and fall, which facilitates the maintenance and cleaning of the ventilation mechanism.

[0009] As a further preferred technical solution of this utility model; a hollow plate is fixedly installed on the top of the lifting platform, an installation part is provided on the hollow plate, an installation box is fixedly installed at the bottom of the installation part, a fan is fixedly installed inside the installation box, an exhaust fan is installed at the bottom of the installation box, and the output end of the fan passes through the installation box and is fixedly connected to the exhaust fan.

[0010] The exhaust fan is driven by a blower to circulate the air inside the elevator car, thus preventing the air from becoming stagnant in the enclosed environment.

[0011] As a further preferred technical solution of this utility model, two sets of filter plates are fixedly installed on the fixing frame, and a filter element is stored in the middle position of the filter plate through the replacement port, and a limiting end is provided on the outer ring of the fixing frame.

[0012] During the lifting process of the ventilation mechanism, the position of the ventilation mechanism is limited by the outer ring limiting end of the fixed frame. Beneficial effects

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The drive motor drives the transmission screw to rotate, causing the auxiliary lifting block to move up and down under the rotation of the transmission screw. The connecting rod achieves a guiding effect, allowing the lifting platform to rise and fall, which facilitates the maintenance and cleaning of the ventilation mechanism. 2. During the lifting process of the ventilation mechanism, the position of the ventilation mechanism is limited by the outer ring limit end of the fixed frame. At the same time, after the ventilation mechanism is lowered, the filter element can be taken out and replaced through the replacement port, which increases the convenience of filter element replacement, ensures the cleanliness of circulating air in the small space of the elevator shaft, and reduces the impact of dust on the ventilation system in the car. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the top plate position of this utility model; Figure 3 This is a cross-sectional structural diagram of the lifting mechanism of this utility model; Figure 4 This is a cross-sectional structural diagram of the lifting platform of this utility model.

[0015] In the diagram: 1. Elevator car; 11. Elevator door; 12. Car top plate; 2. Lifting mechanism; 21. Positioning frame; 22. Transmission screw; 221. Bearing seat; 23. Connecting rod; 24. Auxiliary lifting block; 25. Guide rod; 3. Protective box; 31. Drive motor; 4. Ventilation mechanism; 41. Fixing frame; 411. Filter plate; 42. Replacement port; 43. Perforated plate; 431. Mounting part; 44. Fan; 441. Mounting box; 45. Exhaust fan; 46. Lifting platform; 47. Filter element. Detailed Implementation

[0016] This specific implementation method is an environmentally friendly ventilation system for elevators.

[0017] The aforementioned utility model has a high filter replacement position, which requires the use of ladders and other tools to carry the filter into the elevator car, making the process cumbersome. Furthermore, different sizes of ladders must be selected according to the size of the elevator car, which is quite limiting and not conducive to the filter replacement operation.

[0018] Example 1: Its structural schematic diagram is as follows Figures 1-4As shown. An elevator environmental ventilation system includes an elevator car 1, with an elevator door 11 slidably installed on the front of the elevator car 1. A car top plate 12 is provided on the top of the elevator car 1. A ventilation mechanism 4 is installed through the middle of the car top plate 12. Lifting mechanisms 2 are fixedly installed through the car top plate 12 at the four corners of the outer ring of the ventilation mechanism 4. The lifting mechanism 2 includes four sets of positioning frames 21. Guide rods 25 are fixedly installed inside three sets of positioning frames 21, and a transmission screw 22 is installed inside one set of positioning frames 21. The two ends of the transmission screw 22 are fixedly installed to the inner wall of the positioning frame 21 through bearing seats 221. All four sets of positioning frames 21 are installed through the car top plate 12 to facilitate the lifting and lowering of the ventilation mechanism 4 under the action of the lifting mechanism 2. A protective box 3 is fixedly installed on the top of one set of lifting mechanisms 2, and a drive motor 31 is fixedly installed inside the protective box 3. The ventilation mechanism 4 includes a lifting platform 46 and a fixed frame 41 fixedly installed at the bottom, with replacement ports 42 on both sides of the fixed frame 41.

[0019] Connecting rods 23 are fixedly installed at the four corners of the top of the lifting platform 46, and auxiliary lifting blocks 24 are fixedly installed on the top of the connecting rods 23. Three sets of auxiliary lifting blocks 24 are slidably installed through guide rods 25, and one set of auxiliary lifting blocks 24 is threaded through transmission screws 22. The output end of the drive motor 31 passes through the transmission screws 22 and is connected to the transmission screws 22. The drive motor 31 drives the transmission screws 22 to rotate, so that the auxiliary lifting blocks 24 move up and down under the rotation of the transmission screws 22, and achieve a guiding effect through the connecting rods 23, so that the lifting platform 46 can be raised and lowered, which facilitates the maintenance and cleaning of the ventilation mechanism 4. A perforated plate 43 is fixedly installed on the top of the lifting platform 46. The perforated plate 43 has a mounting part 431. A mounting box 441 is fixedly installed at the bottom of the mounting part 431, and a fan 44 is fixedly installed inside the mounting box 441. An exhaust fan 45 is installed at the bottom of the mounting box 441, and the output end of the fan 44 passes through the mounting box 441 and is fixedly connected to the exhaust fan 45.

[0020] The exhaust fan 45 is driven by the blower 44 to rotate, allowing air to circulate inside the elevator car 1 and preventing stagnant air in the enclosed environment. Two sets of filter plates 411 are fixedly installed on the mounting bracket 41, with a filter element 47 stored in the middle of the filter plate 411 through the replacement port 42. The mounting bracket 41 has a limiting end on its outer ring. During the lifting process of the ventilation mechanism 4, the position of the ventilation mechanism 4 is limited by the limiting end of the mounting bracket 41. After the ventilation mechanism 4 descends, the filter element 47 is removed and replaced through the replacement port 42, ensuring the cleanliness of the circulating air in the small space of the elevator shaft and reducing the impact of dust on the ventilation system inside the car.

[0021] First, the exhaust fan 45 is driven by the fan 44 to rotate, so that the air inside the elevator car 1 can circulate, thus completing the elevator's environmental ventilation system. After long-term use, the transmission screw 22 is driven by the drive motor 31 to rotate, so that the auxiliary lifting block 24 moves up and down under the rotation of the transmission screw 22. The connecting rod 23 achieves a guiding effect, so that the lifting platform 46 can be raised and lowered. The filter element 47 can be taken out and replaced through the replacement port 42, ensuring the cleanliness of the circulating air in the small space of the elevator shaft and reducing the impact of dust on the ventilation system inside the car.

[0022] All technical features in this embodiment can be freely combined according to actual needs.

[0023] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. An elevator environmentally friendly ventilation system, comprising an elevator car (1), wherein an elevator door (11) is slidably installed on the front of the elevator car (1), and a car top plate (12) is provided on the top of the elevator car (1), characterized in that, A ventilation mechanism (4) is installed through the middle of the car top plate (12). A lifting mechanism (2) is fixedly installed through the four corners of the outer ring of the ventilation mechanism (4). A protective box (3) is fixedly installed on the top of a set of lifting mechanisms (2), and a drive motor (31) is fixedly installed inside the protective box (3). The ventilation mechanism (4) includes a lifting platform (46) and a fixed frame (41) fixedly installed at the bottom. Replacement ports (42) are opened on both sides of the fixed frame (41).

2. The elevator environmentally friendly ventilation system according to claim 1, characterized in that: The lifting mechanism (2) includes four sets of positioning frames (21). Three sets of positioning frames (21) are fixedly installed with guide rods (25). One set of positioning frames (21) is installed with a transmission screw (22). The two ends of the transmission screw (22) are fixedly installed with the inner wall of the positioning frame (21) through bearing seats (221).

3. The elevator environmentally friendly ventilation system according to claim 2, characterized in that: Connecting rods (23) are fixedly installed at the four corners of the top of the lifting platform (46), and auxiliary lifting blocks (24) are fixedly installed on the top of the connecting rods (23). Three sets of auxiliary lifting blocks (24) slide through the guide rod (25), and one set of auxiliary lifting blocks (24) is threaded through the transmission screw (22). The output end of the drive motor (31) passes through the transmission screw (22) and is connected to the transmission screw (22).

4. The elevator environmentally friendly ventilation system according to claim 1, characterized in that: A perforated plate (43) is fixedly installed on the top of the lifting platform (46). An installation part (431) is provided on the perforated plate (43). An installation box (441) is fixedly installed at the bottom of the installation part (431). A fan (44) is fixedly installed inside the installation box (441). An exhaust fan (45) is installed at the bottom of the installation box (441). The output end of the fan (44) passes through the installation box (441) and is fixedly connected to the exhaust fan (45).

5. The elevator environmentally friendly ventilation system according to claim 1, characterized in that: Two sets of filter plates (411) are fixedly installed on the fixed frame (41), and filter element (47) is stored in the middle position of the filter plate (411) through the replacement port (42). The fixed frame (41) has a limiting end on the outer ring.

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